Storing like that is wise, but instead of wasting your time waiting for purchasing an expensive safe, just buy a very good Pelican case for it and a high quality padlock and keep itin a closet so you can simply toss it into your Subi when you inevitably hit a local range.
What brand rifle and caliber did you end up purchasing?
That’s actually a really great collection. Rim fire is extremely fun to plink targets with and the ammo is cheap, which is all that really matters at this point.